Littelfuse 0313.375VXP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0313.375VXP is a 375 mA, 250 V AC/DC slow-blow glass cartridge fuse designed for 3AB and 3AG holder applications. This fuse is classified as Active product status and meets international safety standards including CE, CSA, and UL certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and performance characteristics to ensure direct interchangeability in circuit protection applications.

Substiute Parts

0313.375VXP

Littelfuse Inc.In Stock: 7030313.375VXP Datasheet

Current PartRFQ

0313.375HXP

Littelfuse Inc.In Stock: 10580313.375HXP Datasheet

Parametric EquivalentRFQ

0313.375MXP

LittelfuseIn Stock: 37180313.375MXP Datasheet

Parametric EquivalentRFQ

0034.5217

SCHURTER Inc.In Stock: 9910034.5217 Datasheet

DirectRFQ

BK/MDL-3/8-R

Eaton - Electronics DivisionIn Stock: 1206BK/MDL-3/8-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0313.375VXP are classified based on strict electrical and mechanical parameter matching:

Parametric Equivalents — Parts with identical electrical ratings (375 mA, 250 V AC), response time (Slow Blow), mechanical dimensions (0.250" Dia x 1.250" L), and holder compatibility (3AB, 3AG):

• 0313.375HXP (Littelfuse Inc.)
• 0313.375MXP (Littelfuse)

Direct Manufacturer Equivalent — Part meeting all electrical and mechanical specifications but with different product status:

• 0034.5217 (SCHURTER Inc.) — Obsolete status

MFR Recommended Equivalent — Part meeting all electrical and mechanical specifications from alternative manufacturer:

• BK/MDL-3/8-R (Eaton - Electronics Division)

Substitution eligibility is determined by: current rating, voltage rating, response time classification, package dimensions, holder compatibility, and breaking capacity.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, Full Compliance):

• 0313.375HXP and 0313.375MXP are direct parametric equivalents with Active product status and identical electrical/mechanical specifications. Both maintain CE, CSA, and UL certifications. Selection between these Littelfuse variants depends on inventory availability and supply chain requirements.

Alternative Manufacturer Option (Active Status):

• BK/MDL-3/8-R from Eaton - Electronics Division is an Active product meeting all electrical and mechanical requirements with CE, CSA, and UL approvals. This option provides cross-manufacturer interchangeability while maintaining compliance standards.

Legacy Equivalent (Obsolete Status):

• 0034.5217 from SCHURTER Inc. meets electrical and mechanical specifications but carries Obsolete product status. This part is suitable only for legacy system maintenance where original component sourcing is required. CE certification is not listed; only CSA and UL approvals are documented.

Frequently Asked Questions (FAQ)

Q: Can 0313.375HXP and 0313.375MXP be used interchangeably with 0313.375VXP? A: Yes. Both parts are parametric equivalents with identical current rating (375 mA), voltage rating (250 V AC), response time (Slow Blow), mechanical dimensions (0.250" Dia x 1.250" L), and holder compatibility (3AB, 3AG). All three parts maintain identical melting I²t values (1.23) and DC cold resistance (2.095 Ohms).

Q: What is the difference between the Littelfuse variants (VXP, HXP, MXP)? A: The three Littelfuse part numbers represent different manufacturing batches or internal designations within the same electrical and mechanical specification. All three are Active products with identical performance characteristics and certifications.

Q: Is BK/MDL-3/8-R a suitable replacement? A: Yes, BK/MDL-3/8-R from Eaton meets all electrical ratings (375 mA, 250 V AC), response time (Slow Blow), and mechanical dimensions. However, DC cold resistance differs (1.567 Ohms vs. 2.095 Ohms) and melting I²t is lower (0.982 vs. 1.23). This part is suitable for applications where these parameter variations are acceptable.

Q: Why is 0034.5217 listed as Obsolete? A: 0034.5217 from SCHURTER Inc. carries Obsolete product status, indicating it is no longer in active production. This part meets electrical and mechanical specifications but should be used only for legacy system maintenance or replacement scenarios where original component sourcing is necessary.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts (0313.375HXP, 0313.375MXP, 0034.5217, and BK/MDL-3/8-R) are ROHS3 Compliant.

Q: What certifications apply to all substitute parts? A: All substitute parts hold CSA and UL certifications. CE certification is present on 0313.375VXP, 0313.375HXP, 0313.375MXP, and BK/MDL-3/8-R. The SCHURTER part (0034.5217) does not list CE certification.

Q: Can these fuses be used in different holder types? A: No. All listed parts require 3AB or 3AG holders. Mechanical dimensions (0.250" Dia x 1.250" L) are fixed and compatible only with these specified holder types.